Sobel, R. (1983). IBM Colossus: The unauthorized, unvarnished, untamperred truth about America's corporate giant. Toronto: Bantam Books.
استشهاد بنمط شيكاغوSobel, Robert. IBM Colossus: The Unauthorized, Unvarnished, Untamperred Truth About America's Corporate Giant. Toronto: Bantam Books, 1983.
MLA استشهادSobel, Robert. IBM Colossus: The Unauthorized, Unvarnished, Untamperred Truth About America's Corporate Giant. Toronto: Bantam Books, 1983.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.